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TST: Make HDF5 fspath write test robust #16575

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Jun 1, 2017
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TST: Make HDF5 fspath write test robust #16575

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21 changes: 20 additions & 1 deletion pandas/tests/io/test_common.py
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Original file line number Diff line number Diff line change
Expand Up @@ -143,7 +143,6 @@ def test_read_fspath_all(self, reader, module, path):
('to_csv', {}, 'os'),
('to_excel', {'engine': 'xlwt'}, 'xlwt'),
('to_feather', {}, 'feather'),
('to_hdf', {'key': 'bar', 'mode': 'w'}, 'tables'),
('to_html', {}, 'os'),
('to_json', {}, 'os'),
('to_latex', {}, 'os'),
Expand Down Expand Up @@ -171,6 +170,26 @@ def test_write_fspath_all(self, writer_name, writer_kwargs, module):

assert result == expected

def test_write_fspath_hdf5(self):
# Same test as write_fspath_all, except HDF5 files aren't
# necessarily byte-for-byte identical for a given dataframe, so we'll
# have to read and compare equality
pytest.importorskip('tables')

df = pd.DataFrame({"A": [1, 2]})
p1 = tm.ensure_clean('string')
p2 = tm.ensure_clean('fspath')

with p1 as string, p2 as fspath:
mypath = CustomFSPath(fspath)
df.to_hdf(mypath, key='bar')
df.to_hdf(string, key='bar')

result = pd.read_hdf(fspath, key='bar')
expected = pd.read_hdf(string, key='bar')

tm.assert_frame_equal(result, expected)


class TestMMapWrapper(object):

Expand Down